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Finding the Third Proportional to 993.50 and 2,159.50

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Solution

The third proportional to 993.50 and 2,159.50 is: 4,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.50 : 2,159.50 = 2,159.50 : x
  2. Step 2: Convert to fraction form
    993.50/2,159.50 = 2,159.50/x
  3. Step 3: Cross multiply
    993.50x = 2,159.50 × 2,159.50
  4. Step 4: Simplify right side
    993.50x = 4,663,440.25
  5. Step 5: Solve for x
    x = 4,663,440.25/993.50
  6. Step 6: Final answer
    x = 4,693.95

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.